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-rw-r--r--drivers/acpi/utilities/Makefile2
-rw-r--r--drivers/acpi/utilities/utcache.c315
2 files changed, 1 insertions, 316 deletions
diff --git a/drivers/acpi/utilities/Makefile b/drivers/acpi/utilities/Makefile
index 88eff14c4894..66a71a54cb0d 100644
--- a/drivers/acpi/utilities/Makefile
+++ b/drivers/acpi/utilities/Makefile
@@ -4,6 +4,6 @@
4 4
5obj-y := utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \ 5obj-y := utalloc.o utdebug.o uteval.o utinit.o utmisc.o utxface.o \
6 utcopy.o utdelete.o utglobal.o utmath.o utobject.o \ 6 utcopy.o utdelete.o utglobal.o utmath.o utobject.o \
7 utstate.o utmutex.o utobject.o utcache.o utresrc.o 7 utstate.o utmutex.o utobject.o utresrc.o
8 8
9EXTRA_CFLAGS += $(ACPI_CFLAGS) 9EXTRA_CFLAGS += $(ACPI_CFLAGS)
diff --git a/drivers/acpi/utilities/utcache.c b/drivers/acpi/utilities/utcache.c
deleted file mode 100644
index 1e549fd574a0..000000000000
--- a/drivers/acpi/utilities/utcache.c
+++ /dev/null
@@ -1,315 +0,0 @@
1/******************************************************************************
2 *
3 * Module Name: utcache - local cache allocation routines
4 *
5 *****************************************************************************/
6
7/*
8 * Copyright (C) 2000 - 2008, Intel Corp.
9 * All rights reserved.
10 *
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
13 * are met:
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions, and the following disclaimer,
16 * without modification.
17 * 2. Redistributions in binary form must reproduce at minimum a disclaimer
18 * substantially similar to the "NO WARRANTY" disclaimer below
19 * ("Disclaimer") and any redistribution must be conditioned upon
20 * including a substantially similar Disclaimer requirement for further
21 * binary redistribution.
22 * 3. Neither the names of the above-listed copyright holders nor the names
23 * of any contributors may be used to endorse or promote products derived
24 * from this software without specific prior written permission.
25 *
26 * Alternatively, this software may be distributed under the terms of the
27 * GNU General Public License ("GPL") version 2 as published by the Free
28 * Software Foundation.
29 *
30 * NO WARRANTY
31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR
34 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
35 * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
36 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
37 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
40 * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
41 * POSSIBILITY OF SUCH DAMAGES.
42 */
43
44#include <acpi/acpi.h>
45#include <acpi/accommon.h>
46
47#define _COMPONENT ACPI_UTILITIES
48ACPI_MODULE_NAME("utcache")
49#ifdef ACPI_USE_LOCAL_CACHE
50/*******************************************************************************
51 *
52 * FUNCTION: acpi_os_create_cache
53 *
54 * PARAMETERS: cache_name - Ascii name for the cache
55 * object_size - Size of each cached object
56 * max_depth - Maximum depth of the cache (in objects)
57 * return_cache - Where the new cache object is returned
58 *
59 * RETURN: Status
60 *
61 * DESCRIPTION: Create a cache object
62 *
63 ******************************************************************************/
64acpi_status
65acpi_os_create_cache(char *cache_name,
66 u16 object_size,
67 u16 max_depth, struct acpi_memory_list ** return_cache)
68{
69 struct acpi_memory_list *cache;
70
71 ACPI_FUNCTION_ENTRY();
72
73 if (!cache_name || !return_cache || (object_size < 16)) {
74 return (AE_BAD_PARAMETER);
75 }
76
77 /* Create the cache object */
78
79 cache = acpi_os_allocate(sizeof(struct acpi_memory_list));
80 if (!cache) {
81 return (AE_NO_MEMORY);
82 }
83
84 /* Populate the cache object and return it */
85
86 ACPI_MEMSET(cache, 0, sizeof(struct acpi_memory_list));
87 cache->link_offset = 8;
88 cache->list_name = cache_name;
89 cache->object_size = object_size;
90 cache->max_depth = max_depth;
91
92 *return_cache = cache;
93 return (AE_OK);
94}
95
96/*******************************************************************************
97 *
98 * FUNCTION: acpi_os_purge_cache
99 *
100 * PARAMETERS: Cache - Handle to cache object
101 *
102 * RETURN: Status
103 *
104 * DESCRIPTION: Free all objects within the requested cache.
105 *
106 ******************************************************************************/
107
108acpi_status acpi_os_purge_cache(struct acpi_memory_list * cache)
109{
110 char *next;
111
112 ACPI_FUNCTION_ENTRY();
113
114 if (!cache) {
115 return (AE_BAD_PARAMETER);
116 }
117
118 /* Walk the list of objects in this cache */
119
120 while (cache->list_head) {
121
122 /* Delete and unlink one cached state object */
123
124 next = *(ACPI_CAST_INDIRECT_PTR(char,
125 &(((char *)cache->
126 list_head)[cache->
127 link_offset])));
128 ACPI_FREE(cache->list_head);
129
130 cache->list_head = next;
131 cache->current_depth--;
132 }
133
134 return (AE_OK);
135}
136
137/*******************************************************************************
138 *
139 * FUNCTION: acpi_os_delete_cache
140 *
141 * PARAMETERS: Cache - Handle to cache object
142 *
143 * RETURN: Status
144 *
145 * DESCRIPTION: Free all objects within the requested cache and delete the
146 * cache object.
147 *
148 ******************************************************************************/
149
150acpi_status acpi_os_delete_cache(struct acpi_memory_list * cache)
151{
152 acpi_status status;
153
154 ACPI_FUNCTION_ENTRY();
155
156 /* Purge all objects in the cache */
157
158 status = acpi_os_purge_cache(cache);
159 if (ACPI_FAILURE(status)) {
160 return (status);
161 }
162
163 /* Now we can delete the cache object */
164
165 ACPI_FREE(cache);
166 return (AE_OK);
167}
168
169/*******************************************************************************
170 *
171 * FUNCTION: acpi_os_release_object
172 *
173 * PARAMETERS: Cache - Handle to cache object
174 * Object - The object to be released
175 *
176 * RETURN: None
177 *
178 * DESCRIPTION: Release an object to the specified cache. If cache is full,
179 * the object is deleted.
180 *
181 ******************************************************************************/
182
183acpi_status
184acpi_os_release_object(struct acpi_memory_list * cache, void *object)
185{
186 acpi_status status;
187
188 ACPI_FUNCTION_ENTRY();
189
190 if (!cache || !object) {
191 return (AE_BAD_PARAMETER);
192 }
193
194 /* If cache is full, just free this object */
195
196 if (cache->current_depth >= cache->max_depth) {
197 ACPI_FREE(object);
198 ACPI_MEM_TRACKING(cache->total_freed++);
199 }
200
201 /* Otherwise put this object back into the cache */
202
203 else {
204 status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
205 if (ACPI_FAILURE(status)) {
206 return (status);
207 }
208
209 /* Mark the object as cached */
210
211 ACPI_MEMSET(object, 0xCA, cache->object_size);
212 ACPI_SET_DESCRIPTOR_TYPE(object, ACPI_DESC_TYPE_CACHED);
213
214 /* Put the object at the head of the cache list */
215
216 *(ACPI_CAST_INDIRECT_PTR(char,
217 &(((char *)object)[cache->
218 link_offset]))) =
219 cache->list_head;
220 cache->list_head = object;
221 cache->current_depth++;
222
223 (void)acpi_ut_release_mutex(ACPI_MTX_CACHES);
224 }
225
226 return (AE_OK);
227}
228
229/*******************************************************************************
230 *
231 * FUNCTION: acpi_os_acquire_object
232 *
233 * PARAMETERS: Cache - Handle to cache object
234 *
235 * RETURN: the acquired object. NULL on error
236 *
237 * DESCRIPTION: Get an object from the specified cache. If cache is empty,
238 * the object is allocated.
239 *
240 ******************************************************************************/
241
242void *acpi_os_acquire_object(struct acpi_memory_list *cache)
243{
244 acpi_status status;
245 void *object;
246
247 ACPI_FUNCTION_NAME(os_acquire_object);
248
249 if (!cache) {
250 return (NULL);
251 }
252
253 status = acpi_ut_acquire_mutex(ACPI_MTX_CACHES);
254 if (ACPI_FAILURE(status)) {
255 return (NULL);
256 }
257
258 ACPI_MEM_TRACKING(cache->requests++);
259
260 /* Check the cache first */
261
262 if (cache->list_head) {
263
264 /* There is an object available, use it */
265
266 object = cache->list_head;
267 cache->list_head = *(ACPI_CAST_INDIRECT_PTR(char,
268 &(((char *)
269 object)[cache->
270 link_offset])));
271
272 cache->current_depth--;
273
274 ACPI_MEM_TRACKING(cache->hits++);
275 ACPI_DEBUG_PRINT((ACPI_DB_EXEC,
276 "Object %p from %s cache\n", object,
277 cache->list_name));
278
279 status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
280 if (ACPI_FAILURE(status)) {
281 return (NULL);
282 }
283
284 /* Clear (zero) the previously used Object */
285
286 ACPI_MEMSET(object, 0, cache->object_size);
287 } else {
288 /* The cache is empty, create a new object */
289
290 ACPI_MEM_TRACKING(cache->total_allocated++);
291
292#ifdef ACPI_DBG_TRACK_ALLOCATIONS
293 if ((cache->total_allocated - cache->total_freed) >
294 cache->max_occupied) {
295 cache->max_occupied =
296 cache->total_allocated - cache->total_freed;
297 }
298#endif
299
300 /* Avoid deadlock with ACPI_ALLOCATE_ZEROED */
301
302 status = acpi_ut_release_mutex(ACPI_MTX_CACHES);
303 if (ACPI_FAILURE(status)) {
304 return (NULL);
305 }
306
307 object = ACPI_ALLOCATE_ZEROED(cache->object_size);
308 if (!object) {
309 return (NULL);
310 }
311 }
312
313 return (object);
314}
315#endif /* ACPI_USE_LOCAL_CACHE */
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-24 06:21:40 -0500